Form for concrete walls



B. A. KNUDSON.

FORM FOR CNCRETE WALLS.

APPLICATION msn Auc.11. |920.

2 SHEETS-SHEET l.

Patented Apr. 25, 1922.

4 s R. r V. m m .M a. lim. M 3 M d T 1 u f@ 5., n IA ....r M u 7 ..JU L

B. A. KNUDSON.

FORM FOR CONCRETE WALLS.

APPLICATION msu Auml. |920.

IN VEN TUR. B.A.hnudson PATENT v orriee.

BARNEY'A. KNUDSON, or SANTA ANA, eALrFoRNf-L FORM FOR CONCRETE' Ptented Api-.'Rflm pplicatlon led August 17, 1920. Serial No. 404,21?.

To all wiwm it may concern:

Be it known that I. BARNEY KNUosoN. a; citizen of the United States, residing at Santa Anay, in the 'Count- V of Orange and State of California. have invent-ed new and useful Improvements in Forms for Conerete. Wei-11s of which the following is a. specificetion.

It is the object of the present invention to provide a form forconerete Walls Which is of extremelry Simple and inexpensive `construction and which may be riaedil'), 'placed mend. removed from Operative Pennene4 further object of the invent1on to proyildey @form by' the use of lwhich a unitary hollow wall construotion may be formed.

i liqjnventionwill be readily understood. from the following description of the accomd'iawingsi, inwhioh- 4 igurellis inside elevation sl'iowin-g the portion of a. fio-rm in operatiye position..

lighQ is a. plan- Yiew snorting n portion of aforrn and tbeniaillV formed thereby.

Fig. 3, is `a transrerse section on the line of Fiig. 1.

' Fre li is longitudinal section through onelof, the core members. Y

5 is a plan view of the same perth7 biggen away.

ig) 6 is a. plan view of a portion of a form showing a somewhat modified method of using the same.

,7 is artransverse section on the line T-i-A' of Fig'. 46.

In the drawings the improved form is shown in position for constructing the rourse of a partially completedy concrete Wall B. l't wil-l be understood that the Wall is progressivel)Y built up of said courses` the forms heine mounted upon the precedingr course of die' wall for building up the next upper course.

ln practice a sufficient number of form sections may be positionedV one beyond the other to form a Complete course of the wall at one operation` or it the supply of"` torni sertions is limited a portion of u Course ma;r be constructedl at one operation and some of the t'orms then removed and repositioued with relation to the portion of the course a lroad;Y 'formed in order to complete the Forum tion of the course` This lutter method of using the form construction is exemplified in Figs. Fi and T.

The form Consists of u piurulit\Y of frame members siufh as clearl)Y shown in Fig. Il and whichv are mounted in longitri-'diuallyY spced relationalong a `wall so as to form means ffor snpportmg side boards extending along the sides of the wall and projecting unworthy therefrom so as to form a space into which the concrete for forming the new course may be poured. i

Elaoh of the frame members comprises side uprights each of which eonsists of spaced members 1 and 2. A sdpport 3i, is secured acrossthe lower ends ofi members lmand Q r1nd is'adapted. to abut against tbeI Woll: B so aus toi positionwthe upriglits in Aspecifici@ ,relaz- .ytiion fronr said Wall, Tlieside 4 are supported inupright position uponysupiports 3 betweenthe portion of the Wall already formed and the4 uprights of the treme* memfbers., Hools are piigoted nipoti tlaelrprights of the' fram-e members, j@ engaging the side boards .to retain the Latter in position. Bolts Llzisalsol project letergnlly et the ends of oertain of the side boards `adapted to beerranged at corners of the 'form construction. These bolts are engaged by nuts for retaining, the corner side boards in ositionuretative to one another. The side boards thus .tormi a space 5 into which the Conoir'ete is poured. V A

',"he side uprights are; connected intermedite lof their ends by a cross brace Gre cei'redv between the spared members; and 2 of the respeotive side uprighits. The ends of the Cross brace are. preferably.. provided with apertulres 7 spaced: along the brace so that sereni' bolts 8 ma)r be inserted through apertures 9 in the uprights 1 and 2 ond through@ an),v one of the apertures at the respective ends of the cross brace in order to space the side uprights apart various dis tanees for Formingr walls o'F different thicknesses.

Provision is made for drawing together or forcing apart the upper ends ofthe side uprights in order to .sn-ini.T the latter upon the pivots formed by l'loits .Q for either forcing the lower ends ofthe side uprights and supports 3 into rlampiner engagement upon wall P or spreadiuer apart the lower ends of the side uprights in order that the)r ma)7 be removed from the Wall .\s an instaure ot this arrangement a turn burlrlo lli is arranged to engage the threaded rods l l and 1Q proiwting from the respective ends of the turnluulrle. One of said rods shown at 1l is provided with an outer end through Whifli is formed n plurality of llt) withV a screw bolt llt received. through siiitl" ble apertures in the spaced members and through any one of the apertures 13j. VThe rod 12 is provided with an end il received between spaced members 1 and-2 of the oppo- Y site side upright, and said rod is provided with a plurality of spacedinotches 16;' any one of which is arranged to be-reeeived over screw bolt 14 received through Iapertures 15 of the spaced members of said side up right.

1i desired additional bracing nieans may be provided between the side uprights.` As an instance of this arrangement bars 1,8` and 19 overlapping one another and longitudially adjustableV with relation to onewa'notll'ier by means of alined slots 20 provided therein and arranged to' receive a slcreiv llt Q1,"Y secured atitheir respectivoiiter ends tothe side uprights. The Tbarllti maylseeiir'ed to oneot'A the side u'prights by 'passing outer end of the "bar bet/neen thelspae' inerbers l and 2 oinpri'singr said side llipright and extendingl 'bolt 14 thro'udrh suitable aperture in said bar." Thelba'r 19 similarly received betiveti the lspaczeld' 'menihors forming the[oppositesidet upright 4with the bolt 8 connecting said spaed members receivedthrough a suitable aperture inthe han i (lore members are, preterapty, provided 'for use in connection `ivith 'theI torni tliirs described, said core" inenibiersbeiiig arrarnh'ed to torni a holloiv wall construction.' )These core members are shoivn ,as cvlihdiiicalmniembers placed in u ricyht position inspa'ee 5, as Clearly shown n and 3. llaehof the core members eonsists bf afplate 23 Curved upon itself with itsl ends overlapliiin; as shoivn at Z4-25 in order to providea P vlindriral Core construit-ion A top 26 fits over this (fore eonstrurtion and an annular depending flange QTof Jthe top is bolted as shown at to one end fol the plate 23j A handle 29 is provided upon the top so that b v twisting the handle the top and the end ol` plate 23 serai-ed thereto may be shifted with relation to the ol'iposite end 2l of the platt` l'or deoreasiiuf the diameter of the ovlindrr FormingT the (fore, Bi' this arrangenuuil the core may be either expandedor ront rarted in order to permit ot' its insertion :unl roinoval from the ivall ivhen formed.

fi lorli is lorefcrably, provided tor retaininyf tlu rorc ronstrurlion in expanded position. said lool; comprision a pin flti rereived through alined openings ills-32 in the overlippingi ends 31"25. This pin is mounted upon a bar lf pivotod at 34 to the inner end of thi wirrx ronstruitiou so that bjr swinging said liar the pin mai' be inserted in or reY mow-l l'riun the alineii openings. The bar temes? 34, is preferably. actuated bv a lever 35 extendingfiupwardly through the top ot the core construction.

"lrllfheiiltleform, as thus constructed, is employed for forming portions of a course the ends of the fragmentary form are, preferably. closed by end boa rds T received beset in position beyond the end of vthefrag- 'mentary form so as to provide a fragmentary fortnfor. vneat oortionof the course tit ra'efs'tiructred Itliivill beobvitiiis that anysitable tie rods and'"reinforcingA bars may be employed" in Coimeetifonivith the improved form soas to be embddeddnlhe Concrete construction. In Fig. isstibw'n an arrangement of hori- Zbri'ta tie rtidsrco'mprising the longitiidinally eitending rods 38 connected by Cross rodQHQ. "i ertical tie iods employed in connection therewith aij'e also shown at 40. i I

Tt vvil'lbe observed that the form.construetionprovides' :for the building ot' a unitary 4concretos wall having hollow lspacesiivit-hin the sanne thus obtaining in a single structure lthiibadifantliges of both a holloiv Wall: constrnctionand yoj a unitari?1 wall oonstriitibn.

`Varioiis changes may be made ivithoiit departing from the spirit ot the invention as Whatfis claimed is: l i

l. A form` for concrete walls Comprising a pair of spared upright members for each side, a. support secured across the lower ends and inner fades of earh pair of upright inembeis sideboards resting upon the supports, hooks pivotod to `the upright members and extending" overy the upper edges ot the side boards tdhold the side boards in position, a cross brace between the upright members of earth pair above the hooks and having a pluralitliiF of apertures. screw bolts inserted through the pairs ot upright members and through desired ones ot the apertures. a turn buolde` rods threaded into thc turnlniekle, one of said rods` having a plurality of spared apertures and tht` other ol' said rods havingr a plurulitqfv of spared noti-hes, and bolts in sei-ted through the upper ends` of the pairs of uprights for engagement b v the turnbuclile rods so that bv sett ingV the cross brace and turnbuclrle rods to the desired width of Wall the side boards may be tightened upon the Wall b v nianipulatiinr tho turnbuflrle one way and loosened bv manipulating the turnbuclile the other way.

.2. A form for concrete Walls comprising a pair of spaced upright members for each side, a support secured across the lower ends and innerl faces of each pair of upright members, side boards resting upon the supports, hooks pivoted to the upright members and extending over the upper edges of the side boards to hold the side boards in position, a cross brace between the upright members of each pair above the hooks and having a plurality of apertures. screw bolts inserted through the pairs of upright members and through desired ones of the apertures, a turn buckle, rods threaded into the turnbuokle, one of said rods having a plurality of spaced apertures and the other of said rods having a plurality of spaced notches, bolts inserted through the upper ends of the pairs of uprights for engagement by the turnbuckle rods so that by setting the cross brace and turnbuckle rods to the desired Width of Wall -the side boards may be tightened upon the wall by manipulating the turnbuckle one way and loosened by manipulating the turnbuckle the other Way, bars overlapping at their inner ends and having alined slots, and a clamping bolt in the alined slots one end of one bar being mounted upon one of the bolts holding the cross bar, and the opposite end of the other bar being mounted upon the opposite one of the bolts holding the turnbuokle rods so as to form an adjustable diagonal brace.

In testimony whereof I have signed my name to this specification.

BARNEYA. KNUDSON. 

